This hackathon event is targeted to electronics hobbyists. The event participants will work in teams of 2 to 3 persons to build a simple switched-mode power supply (SMPS) buck converter -based LED driver. The development environment is ELL-i, an Arduino-Like Power-over-Ethernet platform. More advanced participants may build their own SMPS designs, e.g. to drive solenoids or motors. The goal of this hackathon is to learn or apply basic skills for building your own smartly powered devices.